1X10 my way vs XX1. What am I missing?

What will I miss if I run a 28t up front (xo crank) and an 11-36 rear cassette

vs.

XX1 gearing?

Will I just get spun out more on the DH sections?

**NOTE: I raced a 1X9 two seasons ago. I loved it, BUT I needed more low end on a couple of the courses.
It was a 32t and a custom 11X36 rear cassette. I am wondering if the new idea of running a 28t and an 11X36 will be what I was looking for two seasons ago.

Maybe I should get a 30t instead of 28t, but I am not sure a 2 tooth drop in the front will be that noticeable..

Being a racer you can probably put together some high cadence outputs which is what will be required on occasion with 28t. But usually that happens just to get started downhill, then coasting - and then mostly fire road or mach-silly trail.

I've run a 32 front on my Enduro for the last couple of years and have missed no gearing as I can do the quick high cadence burst to keep up or out in front of others.

I'll be going 28t on the front of XX1 (as soon as I can find the ring!) and 10s 11x36 like you.

I expect it will be a bit harder to top out, but then, usually, I am going faster than I should anyway.

What size are your wheels? I've raced with a 32t ring and a 11-36 cassette with 26" wheels... That gearing was too low to me. On my 32x11 tallest gearing, I was getting dropped on the start and was spinning way too much at the sprint finish. The steep climbs were fine, never felt out of low end, I was catching back people there... Now I have a 36t ring which is much better. Of course the perfect gearing depends where you race and how you ride (spinner vs masher). A 32t might work well on a 29er though.